The issue is the PP needs big rpm while most rotary freaks now mostly use EP with better turbos but the PP would be awesome for supercharging and turbo :)
Here in Oz engineers will see the 650B single as 1300cc so well within engineering compared to a ca18det or sr20det yet will be lighter, smaller, simpler and match them @ their factory 175-280hp using a disco potato or similar turbo. They will easily go beyond 11,000rpm with ease unlike on twin rotor 13b which puts way more stress on stat gears and e-shaft. Its just a unique solution for a light car or ultralight that needs no more than a crispy fast and high revving 120-300hp ate beyond that the 13b is almost on its own for power to weight at around 70kg bare block. All alloy endplates bring the single down to a ridiculous 30kg.
Ernie, not much to them especially as a single yet heres a rotary datsun that looks like your Bumble Bee supercharged b110 but using a holley with turbo. Im sure most peeps know this legendary beast with jag rear end.
http://www.bryanf.com/510/design.htm